To calculate the square root in Python, you can use the built-in math library's sqrt() function. This makes it very easy to write and to help readers of your code understand what it is you're doing. The sqrt() function takes only a single parameter, which represents the value of which you want to calculate the square root. Let's take a look at a practical example: How to interpret and calculate R Squared or the Coefficient of Determination in Python?Source code: github.com/roesenerm/regression-models fileslib.